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A b-side was originally known as the song on the flipside of a 12" or 7" vinyl single that backed the A-side, but wasn't the song promoted or received the radio play. Today CD singles have b-sides along with remixes, even though ironically CD singles only have one side that is used. With CD singles dying a slow death today, b-sides are becoming a rarer commodity. B-sides were originally used to make a single worth the buyer's money and to get fans to buy the singles along with the album it came from.

B-sides are usually songs that do not appear on the actually album that the A-side appears on, ocassionally it does. The b-side song was usually determined not to fit in with the overall sound of the album or it was considered not good enough to be on the album or just plain leftover tracks, so hence it's usage as a b-side. B-sides have often gotten a reputation of being filler and sub-par, even though a good majority of the time b-sides are better than a lot of the album tracks, and in some cases, better than the A-side.
"Autumn Goodbye" is the b-side to Britney Spears' 1999 single "...Baby One More Time."

"Heartbreaker" is the b-side to P!nk's 2006 single "Stupid Girls."
B-Side by starsinthetwilight February 19, 2009
The other song that isn't the "hit" (A side) on a 45 (7inch) piece of vinyl. Less popular second choice. Often coveted by audiophiles for its rareness. Also known as the flipside.
"Dude, which Cure album is that from?"
"It's a bunch of b sides from their singles."
"Wicked."
"Totally."
B Side by modross July 25, 2008
1-The less popular side of a record, usually featuring a song that is not promoted with the record.

2-The significantly more difficult version of a game.
1- “I personally think this record’s B-Side is super underrated, maybe even better than the A-Side.”

2- “Celeste’s B-Side levels are so difficult, I easily died 3,000 times between them all!”
The reverse side of a phonograph record, especially a single.
How many songs are you planning to record and will all of them go on the album or will some be used as b-sides?
b-side by illEATurHARTout May 20, 2004
Generally accepted as the less popular song of especially a 12" single vynil recording, however in most urban street circles, b-side has come to be known as the more "real" or "true-to-the-streets" recordings of an artist. Ones that are less "main-stream" and less endulging of censors critics and airplay.
Ice Cubes release of the albumn, Bootlegs and B-Sides
b-side by Omar Gardner July 21, 2006

Life on the B-Side 

1. Leading a life that is less mainstream; living off the grid or withdrawing from daily activities
2. Having a laid back life, free of worry.
"Hey, know where Sam's been the past week?"
"He's been at home beatin' off, eating chips, and watching 80's sci-fi. Livin' life on the B-side."

"You know, ever since I've started living on the b-side, I learned to really enjoy shoe-gaze and playing Backgammon."
Life on the B-Side by MoneV October 28, 2013
More from Urban Dictionary

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
After we broke up, he was floxi to me.
floxi by Dr. Geek May 13, 2009
Word of the Day on September 28, 2026
NYC people who migrate north to Quahog, RI to see the leaves in the fall.
New York and everyone from there can fornicate themselves with an iron stick.
leafers by ss++ February 8, 2005
Word of the Day on September 27, 2026
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